| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a metal cap capable of enhancing the gripping property without degrading fittability, sealability, or the like. <P>SOLUTION: In the metal cap 10, a substantially cylindrical part 11 and a top plate 12 to cover one end of the cylindrical part 11 are integrated with each other by a metal plate, a knurl 13 comprising a plurality of recessed parts 13a and projecting parts 13b alternately arranged in the circumferential direction is provided on the cylindrical part 11, and 4-16 sets of the recessed parts 13a and projecting parts 13b to constitute the knurl 13 are arranged in the circumferential direction. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
